Our society has found it necessary to treat the problems of a private enterprise economy in many ways - regulation and consumer information to guard against faulty products and unfair business practices. Yet today's capitalism has to get a high grade. It needs a tune-up, and perhaps even an overhaul, but not a trade-in."

Which economic perspective does the quotation above best represent?

A.) radical

B.) libertarian

C.) conservative

D.) liberal

E.) positive analysis